US5191173A - Electrical cable in reeled tubing - Google Patents
Electrical cable in reeled tubing Download PDFInfo
- Publication number
- US5191173A US5191173A US07/689,465 US68946591A US5191173A US 5191173 A US5191173 A US 5191173A US 68946591 A US68946591 A US 68946591A US 5191173 A US5191173 A US 5191173A
- Authority
- US
- United States
- Prior art keywords
- cable core
- tubing
- cable
- steel tubing
- electrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000945 filler Substances 0.000 claims abstract description 55
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 39
- 239000004020 conductor Substances 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 238000000034 method Methods 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 6
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- 239000000314 lubricant Substances 0.000 abstract description 6
- 239000003112 inhibitor Substances 0.000 abstract description 4
- 238000003466 welding Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 241000191291 Abies alba Species 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
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- 238000010438 heat treatment Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
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- 230000001681 protective effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229920000784 Nomex Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000013000 chemical inhibitor Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
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- 239000004636 vulcanized rubber Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
- E21B17/206—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables with conductors, e.g. electrical, optical
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/0072—Electrical cables comprising fluid supply conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
- H01B7/046—Flexible cables, conductors, or cords, e.g. trailing cables attached to objects sunk in bore holes, e.g. well drilling means, well pumps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/20—Metal tubes, e.g. lead sheaths
- H01B7/202—Longitudinal lapped metal tubes
Definitions
- This invention relates to electrical cable used to supply power to downhole equipment like submersible pumps in subterranean wells. More particularly, the invention relates to electrical cable encased in steel tubing that is known in the industry as reeled or coiled tubing. Optionally, the invention relates to reeled tubing that encases cable bundles comprising both electrical conductors and small-diameter tubing adapted to deliver lubricants, corrosion inhibitors or other fluids to downhole equipment.
- U.S. Pat. No. 3,615,977 discloses a method for insulating coaxial tubing systems using a material that is foamed in situ.
- U.S. Pat. Re. No. 28,961 discloses a method and apparatus for manufacturing soft metal sheaths for electrical wires.
- U.S. Pat. No. 4,938,060 discloses a method and apparatus wherein an electrical cable connected to a downhole sensor extends longitudinally up the interior of coil tubing to receiving and control equipment located at the surface adjacent the wellbore.
- the tubing conducts injection fluid to a desired location within the borehole and protects the electrical cable when running into or out of the hole.
- the coil tubing does not function to support the weight of the electrical cable.
- an electrical cable assembly comprising a cable core having a plurality of conventional, individually insulated electrical conductors encased in reeled tubing in such manner that relative longitudinal or rotational movement between the cable core and the reeled tubing is restricted.
- small-diameter tubing is included with the electrical conductors in the cable core to permit minor amounts of lubricants, corrosion inhibitors or other fluids to be delivered downhole or circulated as desired.
- longitudinally welded reeled tubing that comprises a cable core and a heat curable filler belt disposed between the cable core and the tubing.
- the cable core desirably comprises a plurality of individually insulated electrical conductors.
- the filler belt is adapted to expand upon heating so as to fill substantially all the space between the cable core and the tubing, thereby limiting relative axial or rotational movement between them.
- a weld seam protection strip is preferably provided to protect the cable core and filler belt as flat steel stock is rolled and welded around the cable core to form the reeled tubing.
- inert gas such as nitrogen or corrosion inhibiting fluids may be injected into the reeled tubing at the well surface to fill any voids or flow passages between the inside diameter of the reeled tubing and the electrical cable components installed therein.
- texturing is provided or protrusions are formed on the inwardly facing surface of steel strip stock prior to rolling and welding the stock around the cable core and filler belt.
- the use of such texturing or protrusions further limits any relative axial or rotational movement between the cable core and the welded reeled tubing during use.
- the cable core and filler belt is wrapped with a perforated metal or fiber tape, and barbs or other similarly effective protrusions on the inside surface of the steel strip stock engage the perforations to assist in limiting relative axial or rotational movement.
- the steel strip stock used to make reeled tubing is perforated at predetermined intervals to permit well fluid to enter the tubing and provide hydrostatic balancing of the cable inside the tubing when it is deployed inside a well.
- an expandable, thermosetting filler material can be injected continuously or at intervals through perforations in reeled tubing in sufficient quantity to prevent axial or rotational movement between the insulated electrical conductors and the reeled tubing.
- the cable core and filler material are wrapped with tape having axially spaced spiral windings.
- the cable core comprises an outer polymeric sheath having longitudinally spaced cylindrical metal sleeves bonded thereto which are tacked to the reeled tubing along the weld line as the strip sheet stock is rolled and welded to encase the cable core and sleeves.
- metal bands are bonded around a cable core at longitudinally spaced intervals, and the cable core is inserted into preformed reeled tubing.
- the location of the metal bands within the reeled tubing is thereafter determined by means such as ultrasonic scanning, and the reeled tubing is mechanically crimped down into the metal bands.
- a method for utilizing electrical cable in a subterranean well comprising the steps of encasing the electrical cable in reeled steel tubing in such manner that relative axial and rotational motion between the cable and tubing is restricted, and thereafter deploying the encased electrical cable in the well.
- FIG. 1 is a perspective view depicting a partially broken-away section of cable core being encased in rolled steel strip sheet stock to form the encased electrical cable of the invention
- FIG. 2 is a perspective view depicting a partially broken-away section of cable core being encased in rolled steel strip sheet stock to form the encased electrical cable of the invention
- FIG. 3 is an enlarged cross-sectional detail view of an electrical cable encased in steel tubing in which the steel tubing contains perforations adapted to provide hydrostatic balancing of the cable within the tubing;
- FIG. 4 is a perspective view depicting a partially broken-away section of cable core being encased in rolled steel strip sheet stock, with perforated metal tape spirally wrapped around the cable core so that the perforations are engaged by some of the protrusions on the inside surface of the sheet stock as it is formed and welded around the cable core; and
- FIG. 4A is an enlarged cross-sectional detail view of an electrical cable encased in steel tubing as in FIG. 4 in which one of the inwardly extending protrusions on the inside surface of the reeled tubing has engaged a perforation in the metal tape.
- FIG. 5 is a perspective view depicting a partially broken-away section of cable core being encased in rolled steel strip sheet stock, and further comprising axially spaced spiral windings of metal tape adapted to provide a fluid flow channel between the cable core and the tubing wall;
- FIG. 5A is a longitudinal sectional elevation view of a portion of the encased electrical cable assembly of FIG. 5 in which the individual electrical conductors are not shown in order to simplify the drawing;
- FIG. 6 is a perspective view depicting a partially broken-away section of cable core being encased in rolled steel strip sheet stock, with axially spaced cylindrical metal sleeves bonded to the outside of the cable core and tacked to the inside of the reeled tubing;
- FIG. 6A is a longitudinal sectional elevation view of a portion of the encased electrical cable of FIG. 6 in which the individual electrical conductors are not shown in order to simplify the drawing;
- FIG. 7 is a longitudinal sectional elevation view of a portion of reeled tubing in which the reeled tubing has been mechanically crimped to a metal band bonded to an electrical cable disposed within the tubing;
- FIG. 8 is a schematic elevation view, partially in section, depicting an example of a well completion with an electric submersible pump deployed downhole by means of reeled tubing having the electrical cable disposed therein;
- FIG. 9 is an enlarged cross-sectional detail view of an electrical cable encased in steel tubing, with a thermally insulative strip disposed between the cable core and steel tubing that is adapted to maintain separation between the cable core filler material and steel tubing during welding, to help limit movement of the cable core relative to the welded tubing, and to provide a flow channel to allow oil to be pumped into the tubing to expand the filler material;
- FIG. 10A is an enlarged, detail plan view of one preferred embodiment of a thermally insulative strip for use between the steel tubing and the cable core filler material;
- FIGS. 10B and 10C are cross-sectional views taken along lines 10B--10B and 10C--10C, respectively, of FIG. 10A;
- FIG. 11A is an enlarged, detail plan view of an alternate embodiment of a thermally insulative strip for use between the steel tubing and the cable core filler material;
- FIGS. 11B and 11C are cross-sectional views taken along lines 11B--11B and 11C--11C, respectively, of FIG. 11A;
- FIG. 12A is an enlarged, detail plan view of an alternate embodiment of a thermally insulative strip for use between the steel tubing and the cable core filler material;
- FIGS. 12B and 12C are cross-sectional views taken along lines 12B--12B and 12C--12C, respectively, of FIG. 12A.
- Reeled tubing units and pipe injectors such as shown in U.S. Pat. Nos. 4,938,060 and 4,655,291 are commonly used to service oil and gas wells.
- Reeled tubing units provide ease of access to the downhole well bore and reduced maintenance time for well servicing. By placing an electrical power cable within reeled tubing, these same advantages are available for the installation and removal of downhole submersible pumps.
- FIG. 8 is a schematic view showing a well completion with an electric submersible pump deployed downhole by means of reeled tubing having the electrical cable disposed therein.
- electric submersible pump 130 is deployed downhole in landing nipple 132 inside casing 134 beneath surface 136.
- Electric submersible pump 130 is suspended from reeled tubing 138 having cable core 140 disposed therein in accordance with the present invention.
- Christmas tree 142 is operatively connected to wellhead 146.
- Electrical conductors 145 from cable core 140 are operatively connected to a conventional electrical energy source by electrical cable breakout 144.
- Wing valve 150 controls the flow of hydrocarbons produced through casing 134 into flow line 152.
- Christmas tree 142 is topped by tree cap 148.
- encased cable assembly 10 of the invention preferably comprises cable core 12 and filler layer 16 disposed inside steel tubing that is rolled or formed from strip sheet stock 18 and welded along line 22.
- Strip 20 of thermally insulative material is preferably provided to avoid thermal degradation of cable core 12 or filler layer 16 during welding.
- a preferred thermally insulative material for use as strip 20 is a heat-resistant aromatic polyamide fiber such as that marketed by DuPont under the tradename "Nomex”.
- Cable core 12 preferably further comprises a plurality of individually insulated electrical conductors 14.
- small-diameter tubing 24 is also provided for use in delivering minor amounts of fluids such as lubricants and corrosion inhibitors to pumps and other downhole equipment.
- fluids such as lubricants and corrosion inhibitors
- Filler layer 16 is preferably a continuous layer formed around cable core 12 by extrusion or other similarly effective means, and preferably comprises a heat-curable thermosetting material that will expand to occupy any voids between cable core 12 and the inside surface of reeled tubing 23.
- thermosetting materials are well known and commercially available.
- a satisfactory method for heat-curing filler layer 16 is to place entire reels of reeled tubing 23 inside a curing oven after the tubing is welded around cable core 12 and uncured filler layer 16.
- elastomeric filler layer 16 of the invention is ethylene-propylene terpolymer (EPDM rubber), which swells upon contact with oil.
- EPDM rubber ethylene-propylene terpolymer
- the use of a cable bundle comprising such a filler layer in the encased cable assembly of the invention permits a relatively loose fit between filler layer 16 and reeled tubing 23 during initial installation, followed by expansion of filler layer 16 when exposed to oil to provide mechanical support between the cable bundle and the reeled tubing.
- other similarly effective filler materials can also be used as filler layer 16 in the present invention. Such materials will preferably swell upon heating or upon contact with oil, and when restrained from further swelling, will develop predictable pressures that will not weaken reeled tubing 23.
- FIG. 9 depicts an embodiment of the invention in which a cable bundle comprising a plurality of electrical conductors 162, each surrounded by insulation 160, is encased in filler material 158.
- This cable bundle is disposed inside reeled tubing 154.
- Beneath seam 156, strip 164 is disposed between filler layer 16 and reeled tubing 154.
- Strip 164 is adapted to keep filler layer 158 away from seam 156 during welding; to help resist movement of the cable bundle inside reeled tubing 154; and to provide a flow channel whereby oil can be pumped through longitudinally extending spaces 166, 168 between filler layer 158 and reeled tubing 154.
- filler layer 158 comprises a material such as EPDM rubber that will swell upon contact with oil
- pumping oil through spaces 166, 168 can cause filler layer 158 to swell into tight-fitting contact with reeled tubing 154.
- strip 164 can be configured to define a flow channel 166 that can be used as a fluid flow path for injecting chemical inhibitors or lubricants for downhole equipment such as a pump and motor.
- Strip 169 preferably comprises a plurality of full-width sections 170 that are separated longitudinally by reduced-width sections 174 having notches 172 disposed on each side thereof. Fold lines 176 cooperate to cause reduced-width sections 174 to be spaced radially away from interiorly facing wall 155 of reeled tubing 154. Notches 172 in reduced-width sections 174 permit some of the oil pumped through the space between the strip and the reeled tubing to flow circumferentially outward into contact with the filler layer.
- FIGS. 11A, 11B and 11C depict another strip that can be used in place of strip 164 in FIG. 9.
- strip 178 comprises a longitudinally extending, C-shaped body 180 having oppositely disposed side edges 182.
- a plurality of longitudinally spaced recesses 184 are provided to facilitate fluid flow circumferentially outward between strip 178 and the reeled tubing.
- FIGS. 12A, 12B and 12C depict another strip that can be used in place of strip 164 in FIG. 9.
- strip 186 comprises a plurality of longitudinally spaced full-width sections 188 separated by notches 190 that alternate from side to side.
- Longitudinal web portions 194 provide structural integrity opposite notches 190.
- Fold lines 192 provide spacing between the middle part of strip 186 and the reeled tubing in which it is used.
- Notches 190 also facilitate the elongation of strip 186 as might be desirably if strip 186 is spirally wound around the filler layer.
- the purpose of using an expandable elastomeric material between cable core 12 and reeled tubing 23 is to restrict relative axial and rotational movement of cable core 12 inside reeled tubing 23. In so doing, a significant portion of the weight of the electrical conductors 14 is transferred to and supported by the reeled tubing 23. This feature is particularly important in deep wells where the weight of the electrical conductor 14 can exceed its tensile strength.
- encased cable 26 of the invention preferably comprises cable core 28 and filler belt or layer 34 disposed inside steel tubing 43 that is rolled or formed from strip sheet stock 36 and welded along line 42.
- Strip 40 is preferably provided to avoid thermal degradation of cable core 28 or filler layer 34 during welding as discussed above.
- Cable core 28 preferably further comprises a plurality of individually insulated electrical conductors 30.
- small-diameter tubing 32 is also provided for use in delivering minor amounts of fluids such as lubricants to pumps and other downhole equipment.
- Surface texturing or protrusions 38 can be provided on the inwardly facing surface of steel strip stock 36 prior to rolling or forming reeled tubing 43 around cable core 38 and filler layer 34. Protrusions 38 will further assist in providing a mechanical bond between cable core 28 and reeled tubing 43 after filler layer 34 is expanded and cured.
- protrusions 52 on the inside surface of steel tubing 52 can also be used to maintain a desired spacing between a non-expandable filler material 48 and steel tubing 50 where it is desired to maintain a longitudinally extending fluid flow channel 62 through tubing 50 around the cable core.
- electrical conductors 46 are disposed inside filler material 48, which can be an extruded polymeric material that is thermally stable at the operating conditions to be encountered during use of the subject electrical cable assembly.
- thermal expansion and curing of the filler material within the reeled tubing containing the electrical cable core is not required, as protrusions 52 are compressed against filler material 48 to provide a mechanical bond therebetween.
- a similar configuration may be desirable to avoid the need for thermal curing even where it is not intended to provide a fluid flow channel inside the reeled tubing.
- filler material 48 can comprise a polymeric sheath made of vulcanized rubber or some other similarly effective material that will swell when exposed to fluid hydrocarbons when the reeled tubing in which it is encased is deployed downhole.
- Electrical cable assembly 44 of FIG. 3 further comprises a plurality of radially spaced orifices or perforations 58 that serve to permit fluid ingress or egress, or to promote hydrostatic balancing inside and outside of reeled tubing 50. Although not visible in FIG. 3, it is understood that such perforations can be provided at any desired longitudinal spacing as well.
- Longitudinal flow channel 62 may be used to inject corrosion inhibiting fluids at desired downhole locations or to surround cable assembly 44 with an inert gas such as nitrogen. Perforations 58 may be omitted if cable assembly 44 performs better in a nitrogen gas environment.
- tubing-encased electrical cable assembly 64 comprises a plurality of individually insulated electrical conductors 68 that are sheathed with a polymeric filler material 70 that is spirally wrapped with perforated tape 72.
- Steel strip stock 78 further comprises a plurality of axially and radially spaced barbs 76 that extend radially inward as strip stock 78 is rolled or formed around cable core 66, filler material 70 and perforated tape 72, then welded along longitudinal seam line 80 to form reeled tubing 73.
- tape 72 is made of metal, the need for a protective, axially extending strip beneath weld line 80 can be avoided.
- tubing-encased electrical cable assembly 84 comprises a plurality of individually insulated electrical conductors 88 that are sheathed with a polymeric filler material 90 that is spirally wrapped with metal tape 92.
- the tape windings are axially spaced so as to provide a longitudinally extending fluid flow channel 100 through reeled tubing 97.
- protective strip 98 is desirably inserted beneath seam 96 to avoid unintended thermal degradation of the cable core.
- Filler material 90 used in the embodiment shown in FIGS. 5 and 5A can be selected from materials adapted to swell around tape 92 and into a friction fit within the inside wall of reeled tubing 97 whenever a liquid hydrocarbon or other specified fluid is pumped through flow channel 100.
- filler material 90 can be selected from a material adapted to undergo thermal expansion and setting when subjected to elevated temperatures either prior to or during use.
- tubing-encased electrical cable assembly 102 comprises a plurality of individually insulated electrical conductors 106 that are sheathed with a polymeric filler material 108.
- Axially spaced sleeves represented in the sections shown in FIGS. 6 and 6A by sleeve 110 and preferably made of metal, are bonded to filler material 108 by layer 118 of any satisfactory, commercially available epoxy or bonding agent.
- sleeve 110 is made of metal
- sleeve 110 is adapted to be welded to the inside surface of strip stock 112 during welding along seam 114 to make reeled tubing 117.
- the chemical bond between filler material 108 and sleeve 110 cooperates with the weld between sleeve 110 and tubing 117 to restrict relative axial and rotational movement between cable core 104 and reeled tubing 117.
- cable core 120 (comprising a plurality of individually insulated electrical conductors, and optionally at least one fluid flow conductor, which are not shown in FIG. 7 for purposes of simplification) is inserted into preformed reeled tubing 122 by pulling, pumping or other similarly effective means.
- bands 124 Prior to insertion of cable core 120 within reeled tubing 122, bands 124 (preferably metal) are bonded to cable core 120 at longitudinally spaced intervals using epoxy 126 or the like.
- reeled tubing 122 After cable core 120 is inserted into reeled tubing 122, the position of metal band 124 is ascertained by ultrasonic scanning or other similarly effective means, and reeled tubing is secured to band 124 by externally applied crimp 128. Crimping reeled tubing 122 to cable core 120 in this manner limits axial and rotational movement of cable core 120 within the reeled tubing.
- a method for utilizing electrical cable in a subterranean well comprising the steps of encasing the electrical cable in reeled steel tubing in such manner that relative axial and rotational motion between the cable and tubing is restricted, and thereafter deploying the encased electrical cable in the well.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
Description
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US07/689,465 US5191173A (en) | 1991-04-22 | 1991-04-22 | Electrical cable in reeled tubing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/689,465 US5191173A (en) | 1991-04-22 | 1991-04-22 | Electrical cable in reeled tubing |
Publications (1)
Publication Number | Publication Date |
---|---|
US5191173A true US5191173A (en) | 1993-03-02 |
Family
ID=24768596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/689,465 Expired - Fee Related US5191173A (en) | 1991-04-22 | 1991-04-22 | Electrical cable in reeled tubing |
Country Status (1)
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US (1) | US5191173A (en) |
Cited By (61)
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US5374778A (en) * | 1992-11-02 | 1994-12-20 | Sumitomo Wiring Systems, Ltd. | Wire harness |
US5821452A (en) * | 1997-03-14 | 1998-10-13 | Baker Hughes Incorporated | Coiled tubing supported electrical cable having clamped elastomer supports |
FR2763635A1 (en) | 1997-05-23 | 1998-11-27 | Baker Hughes Inc | Downhole well element support system |
EP0882868A2 (en) | 1997-06-03 | 1998-12-09 | Camco International Inc. | Method of suspending an ESP within a wellbore |
EP0893573A2 (en) | 1997-07-22 | 1999-01-27 | Camco International Inc. | Cable anchors |
EP0899421A2 (en) | 1997-08-25 | 1999-03-03 | Camco International Inc. | Method of suspending an electric submergible pump within a wellbore |
US5988286A (en) * | 1997-06-12 | 1999-11-23 | Camco International, Inc. | Cable anchor assembly |
US6148925A (en) * | 1999-02-12 | 2000-11-21 | Moore; Boyd B. | Method of making a conductive downhole wire line system |
US6167915B1 (en) | 1999-08-30 | 2001-01-02 | Baker Hughes Inc. | Well pump electrical cable with internal bristle support |
EP1094194A2 (en) * | 1999-10-21 | 2001-04-25 | Camco International Inc. | Coiled tubing with an electrical cable for a down-hole pumping system and methods for manufacturing and installing such a system |
US6288339B1 (en) * | 1996-04-23 | 2001-09-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Self-supporting cable |
US6396414B1 (en) * | 1998-11-23 | 2002-05-28 | Schlumberger Technology Corporation | Retractable electrical/optical connector |
US6415869B1 (en) | 1999-07-02 | 2002-07-09 | Shell Oil Company | Method of deploying an electrically driven fluid transducer system in a well |
US6459036B1 (en) | 2000-11-10 | 2002-10-01 | The Boc Group, Inc. | Cascaded inert gas purging of distributed or remote electronic devices through interconnected electrical cabling |
US6479752B1 (en) | 1998-04-07 | 2002-11-12 | Baker Hughes Incorporated | Coil springs for cable support |
US6571879B1 (en) | 2000-11-08 | 2003-06-03 | Baker Hughes Incorporated | Surface-actuated release tool for submersible pump assemblies |
WO2003081016A1 (en) * | 2002-03-27 | 2003-10-02 | Siemens Aktiengesellschaft | Connector piece for a fuel pump |
US6697712B1 (en) | 2000-04-24 | 2004-02-24 | Utilx Corporation | Distributed cable feed system and method |
US20040057437A1 (en) * | 2002-09-24 | 2004-03-25 | Daniel Wayne T. | Methods and systems for providing differentiated quality of service in a communications system |
US20040163801A1 (en) * | 2001-08-27 | 2004-08-26 | Dalrymple Larry V. | Heater Cable and method for manufacturing |
US20050045343A1 (en) * | 2003-08-15 | 2005-03-03 | Schlumberger Technology Corporation | A Conduit Having a Cable Therein |
US20050121210A1 (en) * | 2000-11-10 | 2005-06-09 | Celauro Paul J. | Cascaded inert gas purging system |
WO2006015793A1 (en) * | 2004-08-07 | 2006-02-16 | Daimlerchrysler Ag | Electrical connection |
US20060243450A1 (en) * | 2003-07-04 | 2006-11-02 | Philip Head | Method of deploying and powering an electrically driven in a well |
US20070046115A1 (en) * | 2005-08-25 | 2007-03-01 | Baker Hughes Incorporated | Tri-line power cable for electrical submersible pump |
WO2007034242A1 (en) * | 2005-09-24 | 2007-03-29 | Philip Head | Coiled tubing and power cables |
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